Age forging is when a headmate grows up mentally, rather than physically, and as such acts more mature. It can be considered an opposite to age regression. It may be (but is not always) caused by stress or trauma. The age forager may not stay at that age forever, similar to age regressing. This may be a part of a headmate's age sliding.[1]
This term was coined by Tumblr user dodstoldpackage on May 14th, 2020.[1]